The artificial pycnocline of seawater density technology is to form sufficient scale seawater density jump area by artificial methods, so as to affect the normal navigation of submarine. The technique should first study the formation method of pycnocline with moderate scale and reasonable bubble density. Based on the existing industrial technical conditions, this paper completes the overall design of the generation equipment for the artificial pycnocline based on the gas jet method. The design of the pressure vessel and the bubble generator of the key jet components are described in details: Firstly, to set the structure and type of the pressure vessel. Considering the strength of the spherical shell, the structure of the jet and the formation of the continuously distributed pycnocline, the maximum spherical center angle sandwiched between the two adjacent openings is stipulated.?Secondly, to choose nozzle type micro-bubbles generator and set its construction dimension and openings. Finally, the gas jets and equipment stretches are simultaneously used to form the artificial pycnocline.?The research results provide important theoretical guidance for the engineering application.